Harvester-reel



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Patented Aug. 11, 1885.

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' UNITED STATES 1 PATENT OEETQE.

WILLIAM R. BAKER, OF CHICAGO, ILLINOIS.

HARVESTER-REEL.

SPECIFICATION forming part; of Letters Patent No. 324,290, dated August11:, 1885.

Application filed August 7, 1884. (N model.)

Chicago, in the county of Cook and State of Illinois, have inventedcertain new and useful Improvements in Harvester-Reels, of which thefollowing is a specification.

In modern harvesters the reel is generally mounted upon a jointedsupporting -franie, and driven by means of a chain-belt. thrown over asprocket-wheel on the wooden reel- This sprocket-wheel is driven tightupon the shaft and bolted in place, the operation requiring some timeand care. The con- 'nection is at first firm and secure, but under thenecessarily harsh treatment of themachine in the field is apt to becomeloose and ramshackley, and then is not readily tightened a ain.

The object of my present invention is to provide means whereby thesprocketwheel may be easily, quickly, and economically secured to thereel-shaft, so as to make a safe and steady connection therewith, andwhereby also it may at any time be readily tightened as to suchconnection; and it consists in applying circumferentially about theshaft a series of wedge-shaped wear-plates and combining therewith asprocket-wheel having corresponding wedge-shaped recesses in the centralbore of its hub, so that when it has been slipped into position overthese plates, and is driven in its normal direction, it shall clutch andclamp the shaft; in combining with the sprocketwheel and wedgedwear-plates encircling the reel shaft a clamping-belt passing through acircumferential slot in the wheelhub and into the shaft, and having itshead resting upon'a wedge-seat orincline on the periphery of said hub,opposed in action to the clutching connection between the hub andwear-plates, so that by tightening the bolt the wheel will be rigidlyheld to theshaft; and in the various other combinations and details ofconstruction hereinafter described and claimed.

In the drawings, Figure 1 is a perspective view of a harvestenreel andso much of its supporting and driving mechanism as is necessary to thepresent description. Fig. 2 is a side elevation of a drivingsprocket-wheel secured upon the reel-shaft according to my invention,with said shaft and the wheel-hub in section to more clearly indicatethe arrangement of parts; Fig. 3, a vertical section transverselythrough the wheel and longitudinally of a portion of the reel-shaft, andFig. 4 a de-- tail of one of the curved wedge-plates to be secured tothe shaft.

A is a wooden reel-shaft, with the usual.

beaters, a, and supported upon the jointed frame E, of any suitableform. At the inner f 5.

the recesses or inclines in the hub. Thes e wear-pl ates are secured tothe shaft with screws-- g or other fastenings, applied near the thickestedges, the opposite edges being left free in order that under pressurethey may bind firmly upon the shaft and tend constantly to take up allwear beneath them.

As thus described, it is evident that if the sprocket-wheel is slippedinto place upon the wear-plates and held from lateral movement by anysuitable device, it will clutch or bind 1 upon said plates when drivenin its normal direction, and that any wear or abrasion of the woodenshaft will be compensated for by T a further and further binding uponthese plates. For the purpose of securing the wheel from lateralmovement, as just intimated,- its hub is slotted circumferenti-ally, asat is, and

abolt. K, passed through this slot into the shaft beneath. To receivethis bolt the shaft has previously been bored and one of the wearthe hubwill permit sufficientperipheral movement over the shaft to cause theteeth of the hub to bind upon the wear-plates. The bolt has a distinct,and in a sense independent, agency in prevcntinglateral movement of thesprocket-wheel. alone; but I propose also to give it a second agency asa means for clamping the wheel when it has become firmly engaged withthe shaft, and to prevent reverse motion or loosening or, disengagementof the cl etching-grip between the two. To this end the sides of theslot in the wheel-hub rise or areinclined to form a seat for the head ofthe bolt, and this incline is opposed in action to the elutelrengagementbetween the hub and wearplates-that is to say, when the hub is firmlyclutched upon the wear-plates and the bolt clamped down upon its owninclined seat, the two actions will be opposite to each other, the boltand incline preventing reverse motionof the sprocket-wheel upon theshaft, while the hub and wear plates prevent motion independently of theshaft.

\Vhile I have described my improvement as attached or employed inconnection with a sprocket-wheel, it is evident that it can be equallyas well applied to a gear-wheel, and hereinafter where I employ the termwheel in the claims, I intend that a gear-wheel shall be understood asan equivalent of a sprocketwheel; nor do I intend to limit myself to theapplication of this fastening arrangement upon a reel-shaft alone, asthere are many other situations in which it can be employed withadvantage.

I claim as my invention- 1. The combination, substantially ashereinbefore set forth, of the wooden shaft, the

wedged wear-plates secured circnmferentiall y thereon, the wheel havinginternal teeth in its hub to match with said wear-plates,and the boltpassing through aslot in the hub and into the shaft to prevent lateralmovement of the wheel.

2. The combination, substantially as hereinbcfore set forth, of thewooden shaft, the wedged wear-plates independently secured about itsperiphery, the wheel having inclines or teeth in the bore of its hub tomatch said wear-plates, the bolt passing through a circumferential slotin the hub, and the inclined seat for the head of said bolt.

3. The combination, substantially as hereinbcfore set forth, of thewooden shaft, the wedged wear-p1ates independently secured about itsperiphery, the nut confined in aseat in said shaft by one of thewearplates, the wheel having internal teeth or inclines in its hub tomatch and engage with the wean-plates, and the bolt passing through theshaft to engage with the nut in said shaft.

4. The wedged wearplate, formed to embrace a portion of the periphery ofthe shaft,

and having a central perforation for the passage of the clamping-bolt.

5. The driving sprocket or gear wheel formed,substantially ashereinbefore set forth, with internal friction teeth or inclines in thebore of its hub, a circumferential slot through said hub, and aninclined seat alongthelength of said slot opposed in its action to theaction of the internal friction-teeth.

WILLIAM R. BAKER. Witnesses:

J OI-IN V. A. HASBROOK, PAUL ARNOLD.

